X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fbreakpoint.c;h=7006beb62a94f12f884e547a6c17518801b01ff6;hb=3b7344d5ab495cd82b6c72ec5e00d018549837fb;hp=fb57a57d88cb018da9830dd1a8167349644fbea4;hpb=d30113d4f5666ee889549d0383b9a12f33c5301c;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c index fb57a57d88..7006beb62a 100644 --- a/gdb/breakpoint.c +++ b/gdb/breakpoint.c @@ -1,6 +1,6 @@ /* Everything about breakpoints, for GDB. - Copyright (C) 1986-2013 Free Software Foundation, Inc. + Copyright (C) 1986-2014 Free Software Foundation, Inc. This file is part of GDB. @@ -35,7 +35,7 @@ #include "gdbthread.h" #include "target.h" #include "language.h" -#include "gdb_string.h" +#include #include "gdb-demangle.h" #include "filenames.h" #include "annotate.h" @@ -66,7 +66,6 @@ #include "continuations.h" #include "stack.h" #include "skip.h" -#include "gdb_regex.h" #include "ax-gdb.h" #include "dummy-frame.h" @@ -80,12 +79,13 @@ #undef savestring #include "mi/mi-common.h" -#include "python/python.h" +#include "extension.h" /* Enums for exception-handling support. */ enum exception_event_kind { EX_EVENT_THROW, + EX_EVENT_RETHROW, EX_EVENT_CATCH }; @@ -118,7 +118,6 @@ static void create_sals_from_address_default (char **, static void create_breakpoints_sal_default (struct gdbarch *, struct linespec_result *, - struct linespec_sals *, char *, char *, enum bptype, enum bpdisp, int, int, int, @@ -230,11 +229,6 @@ static void stopin_command (char *arg, int from_tty); static void stopat_command (char *arg, int from_tty); -static char *ep_parse_optional_if_clause (char **arg); - -static void catch_exception_command_1 (enum exception_event_kind ex_event, - char *arg, int tempflag, int from_tty); - static void tcatch_command (char *arg, int from_tty); static void detach_single_step_breakpoints (void); @@ -305,7 +299,7 @@ struct breakpoint_ops bkpt_breakpoint_ops; static struct breakpoint_ops bkpt_probe_breakpoint_ops; /* Dynamic printf class type. */ -static struct breakpoint_ops dprintf_breakpoint_ops; +struct breakpoint_ops dprintf_breakpoint_ops; /* The style in which to perform a dynamic printf. This is a user option because different output options have different tradeoffs; @@ -950,7 +944,7 @@ set_breakpoint_condition (struct breakpoint *b, char *exp, } else { - char *arg = exp; + const char *arg = exp; /* I don't know if it matters whether this is the string the user typed in or the decompiled expression. */ @@ -991,12 +985,13 @@ set_breakpoint_condition (struct breakpoint *b, char *exp, /* Completion for the "condition" command. */ static VEC (char_ptr) * -condition_completer (struct cmd_list_element *cmd, char *text, char *word) +condition_completer (struct cmd_list_element *cmd, + const char *text, const char *word) { - char *space; + const char *space; - text = skip_spaces (text); - space = skip_to_space (text); + text = skip_spaces_const (text); + space = skip_to_space_const (text); if (*space == '\0') { int len; @@ -1015,33 +1010,20 @@ condition_completer (struct cmd_list_element *cmd, char *text, char *word) len = strlen (text); ALL_BREAKPOINTS (b) - { - int single = b->loc->next == NULL; - struct bp_location *loc; - int count = 1; - - for (loc = b->loc; loc; loc = loc->next) - { - char location[50]; - - if (single) - xsnprintf (location, sizeof (location), "%d", b->number); - else - xsnprintf (location, sizeof (location), "%d.%d", b->number, - count); + { + char number[50]; - if (strncmp (location, text, len) == 0) - VEC_safe_push (char_ptr, result, xstrdup (location)); + xsnprintf (number, sizeof (number), "%d", b->number); - ++count; - } - } + if (strncmp (number, text, len) == 0) + VEC_safe_push (char_ptr, result, xstrdup (number)); + } return result; } /* We're completing the expression part. */ - text = skip_spaces (space); + text = skip_spaces_const (space); return expression_completer (cmd, text, word); } @@ -1065,14 +1047,18 @@ condition_command (char *arg, int from_tty) ALL_BREAKPOINTS (b) if (b->number == bnum) { - /* Check if this breakpoint has a Python object assigned to - it, and if it has a definition of the "stop" - method. This method and conditions entered into GDB from - the CLI are mutually exclusive. */ - if (b->py_bp_object - && gdbpy_breakpoint_has_py_cond (b->py_bp_object)) - error (_("Cannot set a condition where a Python 'stop' " - "method has been defined in the breakpoint.")); + /* Check if this breakpoint has a "stop" method implemented in an + extension language. This method and conditions entered into GDB + from the CLI are mutually exclusive. */ + const struct extension_language_defn *extlang + = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); + + if (extlang != NULL) + { + error (_("Only one stop condition allowed. There is currently" + " a %s stop condition defined for this breakpoint."), + ext_lang_capitalized_name (extlang)); + } set_breakpoint_condition (b, p, from_tty); if (is_breakpoint (b)) @@ -1141,12 +1127,25 @@ validate_commands_for_breakpoint (struct breakpoint *b, { if (is_tracepoint (b)) { - /* We need to verify that each top-level element of commands is - valid for tracepoints, that there's at most one - while-stepping element, and that while-stepping's body has - valid tracing commands excluding nested while-stepping. */ + struct tracepoint *t = (struct tracepoint *) b; struct command_line *c; struct command_line *while_stepping = 0; + + /* Reset the while-stepping step count. The previous commands + might have included a while-stepping action, while the new + ones might not. */ + t->step_count = 0; + + /* We need to verify that each top-level element of commands is + valid for tracepoints, that there's at most one + while-stepping element, and that the while-stepping's body + has valid tracing commands excluding nested while-stepping. + We also need to validate the tracepoint action line in the + context of the tracepoint --- validate_actionline actually + has side effects, like setting the tracepoint's + while-stepping STEP_COUNT, in addition to checking if the + collect/teval actions parse and make sense in the + tracepoint's context. */ for (c = commands; c; c = c->next) { if (c->control_type == while_stepping_control) @@ -1164,6 +1163,8 @@ validate_commands_for_breakpoint (struct breakpoint *b, else while_stepping = c; } + + validate_actionline (c->line, b); } if (while_stepping) { @@ -1264,7 +1265,7 @@ check_tracepoint_command (char *line, void *closure) { struct breakpoint *b = closure; - validate_actionline (&line, b); + validate_actionline (line, b); } /* A structure used to pass information through @@ -1567,7 +1568,7 @@ breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, struct gdbarch *gdbarch = bl->gdbarch; const unsigned char *bp; CORE_ADDR placed_address = bl->target_info.placed_address; - unsigned placed_size = bl->target_info.placed_size; + int placed_size = bl->target_info.placed_size; /* Update the shadow with what we want to write to memory. */ memcpy (bl->target_info.shadow_contents + bptoffset, @@ -1759,7 +1760,7 @@ update_watchpoint (struct watchpoint *b, int reparse) if (within_current_scope && reparse) { - char *s; + const char *s; if (b->exp) { @@ -1797,11 +1798,19 @@ update_watchpoint (struct watchpoint *b, int reparse) don't try to insert watchpoint. We don't automatically delete such watchpoint, though, since failure to parse expression is different from out-of-scope watchpoint. */ - if ( !target_has_execution) + if (!target_has_execution) { /* Without execution, memory can't change. No use to try and set watchpoint locations. The watchpoint will be reset when the target gains execution, through breakpoint_re_set. */ + if (!can_use_hw_watchpoints) + { + if (b->base.ops->works_in_software_mode (&b->base)) + b->base.type = bp_watchpoint; + else + error (_("Can't set read/access watchpoint when " + "hardware watchpoints are disabled.")); + } } else if (within_current_scope && b->exp) { @@ -1809,7 +1818,7 @@ update_watchpoint (struct watchpoint *b, int reparse) struct value *val_chain, *v, *result, *next; struct program_space *frame_pspace; - fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain); + fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain, 0); /* Avoid setting b->val if it's already set. The meaning of b->val is 'the last value' user saw, and we should update @@ -1941,8 +1950,14 @@ update_watchpoint (struct watchpoint *b, int reparse) } } else if (!b->base.ops->works_in_software_mode (&b->base)) - error (_("Expression cannot be implemented with " - "read/access watchpoint.")); + { + if (!can_use_hw_watchpoints) + error (_("Can't set read/access watchpoint when " + "hardware watchpoints are disabled.")); + else + error (_("Expression cannot be implemented with " + "read/access watchpoint.")); + } else b->base.type = bp_watchpoint; @@ -2046,7 +2061,6 @@ static struct agent_expr * parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) { struct agent_expr *aexpr = NULL; - struct cleanup *old_chain = NULL; volatile struct gdb_exception ex; if (!cond) @@ -2085,6 +2099,9 @@ build_target_condition_list (struct bp_location *bl) int modified = bl->needs_update; struct bp_location *loc; + /* Release conditions left over from a previous insert. */ + VEC_free (agent_expr_p, bl->target_info.conditions); + /* This is only meaningful if the target is evaluating conditions and if the user has opted for condition evaluation on the target's @@ -2184,10 +2201,9 @@ parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) struct cleanup *old_cleanups = 0; struct expression *expr, **argvec; struct agent_expr *aexpr = NULL; - struct cleanup *old_chain = NULL; volatile struct gdb_exception ex; - char *cmdrest; - char *format_start, *format_end; + const char *cmdrest; + const char *format_start, *format_end; struct format_piece *fpieces; int nargs; struct gdbarch *gdbarch = get_current_arch (); @@ -2199,7 +2215,7 @@ parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) if (*cmdrest == ',') ++cmdrest; - cmdrest = skip_spaces (cmdrest); + cmdrest = skip_spaces_const (cmdrest); if (*cmdrest++ != '"') error (_("No format string following the location")); @@ -2215,14 +2231,14 @@ parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) if (*cmdrest++ != '"') error (_("Bad format string, non-terminated '\"'.")); - cmdrest = skip_spaces (cmdrest); + cmdrest = skip_spaces_const (cmdrest); if (!(*cmdrest == ',' || *cmdrest == '\0')) error (_("Invalid argument syntax")); if (*cmdrest == ',') cmdrest++; - cmdrest = skip_spaces (cmdrest); + cmdrest = skip_spaces_const (cmdrest); /* For each argument, make an expression. */ @@ -2232,7 +2248,7 @@ parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) nargs = 0; while (*cmdrest != '\0') { - char *cmd1; + const char *cmd1; cmd1 = cmdrest; expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); @@ -2251,6 +2267,8 @@ parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) fpieces, nargs, argvec); } + do_cleanups (old_cleanups); + if (ex.reason < 0) { /* If we got here, it means the command could not be parsed to a valid @@ -2259,8 +2277,6 @@ parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) return NULL; } - do_cleanups (old_cleanups); - /* We have a valid agent expression, return it. */ return aexpr; } @@ -2277,6 +2293,9 @@ build_target_command_list (struct bp_location *bl) int modified = bl->needs_update; struct bp_location *loc; + /* Release commands left over from a previous insert. */ + VEC_free (agent_expr_p, bl->target_info.tcommands); + /* For now, limit to agent-style dprintf breakpoints. */ if (bl->owner->type != bp_dprintf || strcmp (dprintf_style, dprintf_style_agent) != 0) @@ -2333,11 +2352,11 @@ build_target_command_list (struct bp_location *bl) { /* Only go as far as the first NULL bytecode is located. */ - if (!loc->cond_bytecode) + if (loc->cmd_bytecode == NULL) return; - free_agent_expr (loc->cond_bytecode); - loc->cond_bytecode = NULL; + free_agent_expr (loc->cmd_bytecode); + loc->cmd_bytecode = NULL; } } } @@ -2379,9 +2398,9 @@ insert_bp_location (struct bp_location *bl, int *hw_breakpoint_error, int *hw_bp_error_explained_already) { - int val = 0; - char *hw_bp_err_string = NULL; - struct gdb_exception e; + enum errors bp_err = GDB_NO_ERROR; + const char *bp_err_message = NULL; + volatile struct gdb_exception e; if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) return 0; @@ -2480,12 +2499,16 @@ insert_bp_location (struct bp_location *bl, /* No overlay handling: just set the breakpoint. */ TRY_CATCH (e, RETURN_MASK_ALL) { + int val; + val = bl->owner->ops->insert_location (bl); + if (val) + bp_err = GENERIC_ERROR; } if (e.reason < 0) { - val = 1; - hw_bp_err_string = (char *) e.message; + bp_err = e.error; + bp_err_message = e.message; } } else @@ -2507,9 +2530,24 @@ insert_bp_location (struct bp_location *bl, /* Set a software (trap) breakpoint at the LMA. */ bl->overlay_target_info = bl->target_info; bl->overlay_target_info.placed_address = addr; - val = target_insert_breakpoint (bl->gdbarch, - &bl->overlay_target_info); - if (val != 0) + + /* No overlay handling: just set the breakpoint. */ + TRY_CATCH (e, RETURN_MASK_ALL) + { + int val; + + val = target_insert_breakpoint (bl->gdbarch, + &bl->overlay_target_info); + if (val) + bp_err = GENERIC_ERROR; + } + if (e.reason < 0) + { + bp_err = e.error; + bp_err_message = e.message; + } + + if (bp_err != GDB_NO_ERROR) fprintf_unfiltered (tmp_error_stream, "Overlay breakpoint %d " "failed: in ROM?\n", @@ -2522,12 +2560,16 @@ insert_bp_location (struct bp_location *bl, /* Yes. This overlay section is mapped into memory. */ TRY_CATCH (e, RETURN_MASK_ALL) { + int val; + val = bl->owner->ops->insert_location (bl); + if (val) + bp_err = GENERIC_ERROR; } if (e.reason < 0) { - val = 1; - hw_bp_err_string = (char *) e.message; + bp_err = e.error; + bp_err_message = e.message; } } else @@ -2538,13 +2580,23 @@ insert_bp_location (struct bp_location *bl, } } - if (val) + if (bp_err != GDB_NO_ERROR) { /* Can't set the breakpoint. */ - if (solib_name_from_address (bl->pspace, bl->address)) + + /* In some cases, we might not be able to insert a + breakpoint in a shared library that has already been + removed, but we have not yet processed the shlib unload + event. Unfortunately, some targets that implement + breakpoint insertion themselves (necessary if this is a + HW breakpoint, but SW breakpoints likewise) can't tell + why the breakpoint insertion failed (e.g., the remote + target doesn't define error codes), so we must treat + generic errors as memory errors. */ + if ((bp_err == GENERIC_ERROR || bp_err == MEMORY_ERROR) + && solib_name_from_address (bl->pspace, bl->address)) { /* See also: disable_breakpoints_in_shlibs. */ - val = 0; bl->shlib_disabled = 1; observer_notify_breakpoint_modified (bl->owner); if (!*disabled_breaks) @@ -2559,38 +2611,51 @@ insert_bp_location (struct bp_location *bl, *disabled_breaks = 1; fprintf_unfiltered (tmp_error_stream, "breakpoint #%d\n", bl->owner->number); + return 0; } else { if (bl->loc_type == bp_loc_hardware_breakpoint) { - *hw_breakpoint_error = 1; - *hw_bp_error_explained_already = hw_bp_err_string != NULL; + *hw_breakpoint_error = 1; + *hw_bp_error_explained_already = bp_err_message != NULL; fprintf_unfiltered (tmp_error_stream, "Cannot insert hardware breakpoint %d%s", - bl->owner->number, hw_bp_err_string ? ":" : ".\n"); - if (hw_bp_err_string) - fprintf_unfiltered (tmp_error_stream, "%s.\n", hw_bp_err_string); + bl->owner->number, bp_err_message ? ":" : ".\n"); + if (bp_err_message != NULL) + fprintf_unfiltered (tmp_error_stream, "%s.\n", bp_err_message); } else { - fprintf_unfiltered (tmp_error_stream, - "Cannot insert breakpoint %d.\n", - bl->owner->number); - fprintf_filtered (tmp_error_stream, - "Error accessing memory address "); - fputs_filtered (paddress (bl->gdbarch, bl->address), - tmp_error_stream); - fprintf_filtered (tmp_error_stream, ": %s.\n", - safe_strerror (val)); + if (bp_err_message == NULL) + { + char *message + = memory_error_message (TARGET_XFER_E_IO, + bl->gdbarch, bl->address); + struct cleanup *old_chain = make_cleanup (xfree, message); + + fprintf_unfiltered (tmp_error_stream, + "Cannot insert breakpoint %d.\n" + "%s\n", + bl->owner->number, message); + do_cleanups (old_chain); + } + else + { + fprintf_unfiltered (tmp_error_stream, + "Cannot insert breakpoint %d: %s\n", + bl->owner->number, + bp_err_message); + } } + return 1; } } else bl->inserted = 1; - return val; + return 0; } else if (bl->loc_type == bp_loc_hardware_watchpoint @@ -2598,6 +2663,8 @@ insert_bp_location (struct bp_location *bl, watchpoints. It's not clear that it's necessary... */ && bl->owner->disposition != disp_del_at_next_stop) { + int val; + gdb_assert (bl->owner->ops != NULL && bl->owner->ops->insert_location != NULL); @@ -2641,6 +2708,8 @@ insert_bp_location (struct bp_location *bl, else if (bl->owner->type == bp_catchpoint) { + int val; + gdb_assert (bl->owner->ops != NULL && bl->owner->ops->insert_location != NULL); @@ -2932,6 +3001,30 @@ remove_breakpoints (void) return val; } +/* When a thread exits, remove breakpoints that are related to + that thread. */ + +static void +remove_threaded_breakpoints (struct thread_info *tp, int silent) +{ + struct breakpoint *b, *b_tmp; + + ALL_BREAKPOINTS_SAFE (b, b_tmp) + { + if (b->thread == tp->num && user_breakpoint_p (b)) + { + b->disposition = disp_del_at_next_stop; + + printf_filtered (_("\ +Thread-specific breakpoint %d deleted - thread %d no longer in the thread list.\n"), + b->number, tp->num); + + /* Hide it from the user. */ + b->number = 0; + } + } +} + /* Remove breakpoints of process PID. */ int @@ -3053,10 +3146,10 @@ static const char *const longjmp_names[] = struct breakpoint_objfile_data { /* Minimal symbol for "_ovly_debug_event" (if any). */ - struct minimal_symbol *overlay_msym; + struct bound_minimal_symbol overlay_msym; /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ - struct minimal_symbol *longjmp_msym[NUM_LONGJMP_NAMES]; + struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES]; /* True if we have looked for longjmp probes. */ int longjmp_searched; @@ -3065,10 +3158,10 @@ struct breakpoint_objfile_data VEC (probe_p) *longjmp_probes; /* Minimal symbol for "std::terminate()" (if any). */ - struct minimal_symbol *terminate_msym; + struct bound_minimal_symbol terminate_msym; /* Minimal symbol for "_Unwind_DebugHook" (if any). */ - struct minimal_symbol *exception_msym; + struct bound_minimal_symbol exception_msym; /* True if we have looked for exception probes. */ int exception_searched; @@ -3133,24 +3226,24 @@ create_overlay_event_breakpoint (void) bp_objfile_data = get_breakpoint_objfile_data (objfile); - if (msym_not_found_p (bp_objfile_data->overlay_msym)) + if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) continue; - if (bp_objfile_data->overlay_msym == NULL) + if (bp_objfile_data->overlay_msym.minsym == NULL) { - struct minimal_symbol *m; + struct bound_minimal_symbol m; m = lookup_minimal_symbol_text (func_name, objfile); - if (m == NULL) + if (m.minsym == NULL) { /* Avoid future lookups in this objfile. */ - bp_objfile_data->overlay_msym = &msym_not_found; + bp_objfile_data->overlay_msym.minsym = &msym_not_found; continue; } bp_objfile_data->overlay_msym = m; } - addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); + addr = MSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym.minsym); b = create_internal_breakpoint (get_objfile_arch (objfile), addr, bp_overlay_event, &internal_breakpoint_ops); @@ -3191,15 +3284,28 @@ create_longjmp_master_breakpoint (void) struct breakpoint_objfile_data *bp_objfile_data; gdbarch = get_objfile_arch (objfile); - if (!gdbarch_get_longjmp_target_p (gdbarch)) - continue; bp_objfile_data = get_breakpoint_objfile_data (objfile); if (!bp_objfile_data->longjmp_searched) { - bp_objfile_data->longjmp_probes - = find_probes_in_objfile (objfile, "libc", "longjmp"); + VEC (probe_p) *ret; + + ret = find_probes_in_objfile (objfile, "libc", "longjmp"); + if (ret != NULL) + { + /* We are only interested in checking one element. */ + struct probe *p = VEC_index (probe_p, ret, 0); + + if (!can_evaluate_probe_arguments (p)) + { + /* We cannot use the probe interface here, because it does + not know how to evaluate arguments. */ + VEC_free (probe_p, ret); + ret = NULL; + } + } + bp_objfile_data->longjmp_probes = ret; bp_objfile_data->longjmp_searched = 1; } @@ -3227,31 +3333,34 @@ create_longjmp_master_breakpoint (void) continue; } + if (!gdbarch_get_longjmp_target_p (gdbarch)) + continue; + for (i = 0; i < NUM_LONGJMP_NAMES; i++) { struct breakpoint *b; const char *func_name; CORE_ADDR addr; - if (msym_not_found_p (bp_objfile_data->longjmp_msym[i])) + if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) continue; func_name = longjmp_names[i]; - if (bp_objfile_data->longjmp_msym[i] == NULL) + if (bp_objfile_data->longjmp_msym[i].minsym == NULL) { - struct minimal_symbol *m; + struct bound_minimal_symbol m; m = lookup_minimal_symbol_text (func_name, objfile); - if (m == NULL) + if (m.minsym == NULL) { /* Prevent future lookups in this objfile. */ - bp_objfile_data->longjmp_msym[i] = &msym_not_found; + bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; continue; } bp_objfile_data->longjmp_msym[i] = m; } - addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); + addr = MSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i].minsym); b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, &internal_breakpoint_ops); b->addr_string = xstrdup (func_name); @@ -3288,25 +3397,25 @@ create_std_terminate_master_breakpoint (void) bp_objfile_data = get_breakpoint_objfile_data (objfile); - if (msym_not_found_p (bp_objfile_data->terminate_msym)) + if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) continue; - if (bp_objfile_data->terminate_msym == NULL) + if (bp_objfile_data->terminate_msym.minsym == NULL) { - struct minimal_symbol *m; + struct bound_minimal_symbol m; m = lookup_minimal_symbol (func_name, NULL, objfile); - if (m == NULL || (MSYMBOL_TYPE (m) != mst_text - && MSYMBOL_TYPE (m) != mst_file_text)) + if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text + && MSYMBOL_TYPE (m.minsym) != mst_file_text)) { /* Prevent future lookups in this objfile. */ - bp_objfile_data->terminate_msym = &msym_not_found; + bp_objfile_data->terminate_msym.minsym = &msym_not_found; continue; } bp_objfile_data->terminate_msym = m; } - addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); + addr = MSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym.minsym); b = create_internal_breakpoint (get_objfile_arch (objfile), addr, bp_std_terminate_master, &internal_breakpoint_ops); @@ -3340,8 +3449,24 @@ create_exception_master_breakpoint (void) /* We prefer the SystemTap probe point if it exists. */ if (!bp_objfile_data->exception_searched) { - bp_objfile_data->exception_probes - = find_probes_in_objfile (objfile, "libgcc", "unwind"); + VEC (probe_p) *ret; + + ret = find_probes_in_objfile (objfile, "libgcc", "unwind"); + + if (ret != NULL) + { + /* We are only interested in checking one element. */ + struct probe *p = VEC_index (probe_p, ret, 0); + + if (!can_evaluate_probe_arguments (p)) + { + /* We cannot use the probe interface here, because it does + not know how to evaluate arguments. */ + VEC_free (probe_p, ret); + ret = NULL; + } + } + bp_objfile_data->exception_probes = ret; bp_objfile_data->exception_searched = 1; } @@ -3371,26 +3496,26 @@ create_exception_master_breakpoint (void) /* Otherwise, try the hook function. */ - if (msym_not_found_p (bp_objfile_data->exception_msym)) + if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) continue; gdbarch = get_objfile_arch (objfile); - if (bp_objfile_data->exception_msym == NULL) + if (bp_objfile_data->exception_msym.minsym == NULL) { - struct minimal_symbol *debug_hook; + struct bound_minimal_symbol debug_hook; debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); - if (debug_hook == NULL) + if (debug_hook.minsym == NULL) { - bp_objfile_data->exception_msym = &msym_not_found; + bp_objfile_data->exception_msym.minsym = &msym_not_found; continue; } bp_objfile_data->exception_msym = debug_hook; } - addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); + addr = MSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym.minsym); addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, ¤t_target); b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, @@ -3530,7 +3655,7 @@ detach_breakpoints (ptid_t ptid) struct cleanup *old_chain = save_inferior_ptid (); struct inferior *inf = current_inferior (); - if (PIDGET (ptid) == PIDGET (inferior_ptid)) + if (ptid_get_pid (ptid) == ptid_get_pid (inferior_ptid)) error (_("Cannot detach breakpoints of inferior_ptid")); /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ @@ -3540,6 +3665,15 @@ detach_breakpoints (ptid_t ptid) if (bl->pspace != inf->pspace) continue; + /* This function must physically remove breakpoints locations + from the specified ptid, without modifying the breakpoint + package's state. Locations of type bp_loc_other are only + maintained at GDB side. So, there is no need to remove + these bp_loc_other locations. Moreover, removing these + would modify the breakpoint package's state. */ + if (bl->loc_type == bp_loc_other) + continue; + if (bl->inserted) val |= remove_breakpoint_1 (bl, mark_inserted); } @@ -4146,25 +4280,27 @@ bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) /* See breakpoint.h. */ -enum bpstat_signal_value -bpstat_explains_signal (bpstat bsp) +int +bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) { - enum bpstat_signal_value result = BPSTAT_SIGNAL_NO; - for (; bsp != NULL; bsp = bsp->next) { - /* Ensure that, if we ever entered this loop, then we at least - return BPSTAT_SIGNAL_HIDE. */ - enum bpstat_signal_value newval = BPSTAT_SIGNAL_HIDE; - - if (bsp->breakpoint_at != NULL) - newval = bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at); - - if (newval > result) - result = newval; + if (bsp->breakpoint_at == NULL) + { + /* A moribund location can never explain a signal other than + GDB_SIGNAL_TRAP. */ + if (sig == GDB_SIGNAL_TRAP) + return 1; + } + else + { + if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, + sig)) + return 1; + } } - return result; + return 0; } /* Put in *NUM the breakpoint number of the first breakpoint we are @@ -4563,10 +4699,12 @@ bpstat_print (bpstat bs, int kind) return PRINT_UNKNOWN; } -/* Evaluate the expression EXP and return 1 if value is zero. This is - used inside a catch_errors to evaluate the breakpoint condition. +/* Evaluate the expression EXP and return 1 if value is zero. + This returns the inverse of the condition because it is called + from catch_errors which returns 0 if an exception happened, and if an + exception happens we want execution to stop. The argument is a "struct expression *" that has been cast to a - "char *" to make it pass through catch_errors. */ + "void *" to make it pass through catch_errors. */ static int breakpoint_cond_eval (void *exp) @@ -4636,7 +4774,7 @@ watchpoints_triggered (struct target_waitstatus *ws) w->watchpoint_triggered = watch_triggered_unknown; } - return stopped_by_watchpoint; + return 1; } /* The target could report the data address. Mark watchpoints @@ -4776,7 +4914,7 @@ watchpoint_check (void *p) return WP_VALUE_CHANGED; mark = value_mark (); - fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL); + fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL, 0); /* We use value_equal_contents instead of value_equal because the latter coerces an array to a pointer, thus comparing just @@ -5013,17 +5151,20 @@ bpstat_check_watchpoint (bpstat bs) } } - -/* Check conditions (condition proper, frame, thread and ignore count) +/* For breakpoints that are currently marked as telling gdb to stop, + check conditions (condition proper, frame, thread and ignore count) of breakpoint referred to by BS. If we should not stop for this breakpoint, set BS->stop to 0. */ static void bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) { - int thread_id = pid_to_thread_id (ptid); const struct bp_location *bl; struct breakpoint *b; + int value_is_zero = 0; + struct expression *cond; + + gdb_assert (bs->stop); /* BS is built for existing struct breakpoint. */ bl = bs->bp_location_at; @@ -5037,109 +5178,113 @@ bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) if (frame_id_p (b->frame_id) && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) - bs->stop = 0; - else if (bs->stop) { - int value_is_zero = 0; - struct expression *cond; + bs->stop = 0; + return; + } - /* Evaluate Python breakpoints that have a "stop" - method implemented. */ - if (b->py_bp_object) - bs->stop = gdbpy_should_stop (b->py_bp_object); + /* If this is a thread/task-specific breakpoint, don't waste cpu + evaluating the condition if this isn't the specified + thread/task. */ + if ((b->thread != -1 && b->thread != pid_to_thread_id (ptid)) + || (b->task != 0 && b->task != ada_get_task_number (ptid))) - if (is_watchpoint (b)) - { - struct watchpoint *w = (struct watchpoint *) b; + { + bs->stop = 0; + return; + } - cond = w->cond_exp; - } + /* Evaluate extension language breakpoints that have a "stop" method + implemented. */ + bs->stop = breakpoint_ext_lang_cond_says_stop (b); + + if (is_watchpoint (b)) + { + struct watchpoint *w = (struct watchpoint *) b; + + cond = w->cond_exp; + } + else + cond = bl->cond; + + if (cond && b->disposition != disp_del_at_next_stop) + { + int within_current_scope = 1; + struct watchpoint * w; + + /* We use value_mark and value_free_to_mark because it could + be a long time before we return to the command level and + call free_all_values. We can't call free_all_values + because we might be in the middle of evaluating a + function call. */ + struct value *mark = value_mark (); + + if (is_watchpoint (b)) + w = (struct watchpoint *) b; else - cond = bl->cond; + w = NULL; - if (cond && b->disposition != disp_del_at_next_stop) + /* Need to select the frame, with all that implies so that + the conditions will have the right context. Because we + use the frame, we will not see an inlined function's + variables when we arrive at a breakpoint at the start + of the inlined function; the current frame will be the + call site. */ + if (w == NULL || w->cond_exp_valid_block == NULL) + select_frame (get_current_frame ()); + else { - int within_current_scope = 1; - struct watchpoint * w; - - /* We use value_mark and value_free_to_mark because it could - be a long time before we return to the command level and - call free_all_values. We can't call free_all_values - because we might be in the middle of evaluating a - function call. */ - struct value *mark = value_mark (); - - if (is_watchpoint (b)) - w = (struct watchpoint *) b; - else - w = NULL; - - /* Need to select the frame, with all that implies so that - the conditions will have the right context. Because we - use the frame, we will not see an inlined function's - variables when we arrive at a breakpoint at the start - of the inlined function; the current frame will be the - call site. */ - if (w == NULL || w->cond_exp_valid_block == NULL) - select_frame (get_current_frame ()); + struct frame_info *frame; + + /* For local watchpoint expressions, which particular + instance of a local is being watched matters, so we + keep track of the frame to evaluate the expression + in. To evaluate the condition however, it doesn't + really matter which instantiation of the function + where the condition makes sense triggers the + watchpoint. This allows an expression like "watch + global if q > 10" set in `func', catch writes to + global on all threads that call `func', or catch + writes on all recursive calls of `func' by a single + thread. We simply always evaluate the condition in + the innermost frame that's executing where it makes + sense to evaluate the condition. It seems + intuitive. */ + frame = block_innermost_frame (w->cond_exp_valid_block); + if (frame != NULL) + select_frame (frame); else - { - struct frame_info *frame; - - /* For local watchpoint expressions, which particular - instance of a local is being watched matters, so we - keep track of the frame to evaluate the expression - in. To evaluate the condition however, it doesn't - really matter which instantiation of the function - where the condition makes sense triggers the - watchpoint. This allows an expression like "watch - global if q > 10" set in `func', catch writes to - global on all threads that call `func', or catch - writes on all recursive calls of `func' by a single - thread. We simply always evaluate the condition in - the innermost frame that's executing where it makes - sense to evaluate the condition. It seems - intuitive. */ - frame = block_innermost_frame (w->cond_exp_valid_block); - if (frame != NULL) - select_frame (frame); - else - within_current_scope = 0; - } - if (within_current_scope) - value_is_zero - = catch_errors (breakpoint_cond_eval, cond, - "Error in testing breakpoint condition:\n", - RETURN_MASK_ALL); - else - { - warning (_("Watchpoint condition cannot be tested " - "in the current scope")); - /* If we failed to set the right context for this - watchpoint, unconditionally report it. */ - value_is_zero = 0; - } - /* FIXME-someday, should give breakpoint #. */ - value_free_to_mark (mark); - } - - if (cond && value_is_zero) - { - bs->stop = 0; + within_current_scope = 0; } - else if (b->thread != -1 && b->thread != thread_id) + if (within_current_scope) + value_is_zero + = catch_errors (breakpoint_cond_eval, cond, + "Error in testing breakpoint condition:\n", + RETURN_MASK_ALL); + else { - bs->stop = 0; + warning (_("Watchpoint condition cannot be tested " + "in the current scope")); + /* If we failed to set the right context for this + watchpoint, unconditionally report it. */ + value_is_zero = 0; } - else if (b->ignore_count > 0) - { - b->ignore_count--; - bs->stop = 0; - /* Increase the hit count even though we don't stop. */ - ++(b->hit_count); - observer_notify_breakpoint_modified (b); - } + /* FIXME-someday, should give breakpoint #. */ + value_free_to_mark (mark); + } + + if (cond && value_is_zero) + { + bs->stop = 0; } + else if (b->ignore_count > 0) + { + b->ignore_count--; + bs->stop = 0; + /* Increase the hit count even though we don't stop. */ + ++(b->hit_count); + observer_notify_breakpoint_modified (b); + } } @@ -5293,6 +5438,8 @@ bpstat_stop_status (struct address_space *aspace, if (command_line_is_silent (bs->commands ? bs->commands->commands : NULL)) bs->print = 0; + + b->ops->after_condition_true (bs); } } @@ -5346,25 +5493,6 @@ handle_jit_event (void) target_terminal_inferior (); } -/* Handle an solib event by calling solib_add. */ - -void -handle_solib_event (void) -{ - clear_program_space_solib_cache (current_inferior ()->pspace); - - /* Check for any newly added shared libraries if we're supposed to - be adding them automatically. Switch terminal for any messages - produced by breakpoint_re_set. */ - target_terminal_ours_for_output (); -#ifdef SOLIB_ADD - SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add); -#else - solib_add (NULL, 0, ¤t_target, auto_solib_add); -#endif - target_terminal_inferior (); -} - /* Prepare WHAT final decision for infrun. */ /* Decide what infrun needs to do with this bpstat. */ @@ -5519,7 +5647,10 @@ bpstat_what (bpstat bs_head) break; case bp_dprintf: - this_action = BPSTAT_WHAT_STOP_SILENT; + if (bs->stop) + this_action = BPSTAT_WHAT_STOP_SILENT; + else + this_action = BPSTAT_WHAT_SINGLE; break; default: @@ -5798,8 +5929,6 @@ bptype_string (enum bptype type) return bptypes[(int) type].description; } -DEF_VEC_I(int); - /* For MI, output a field named 'thread-groups' with a list as the value. For CLI, prefix the list with the string 'inf'. */ @@ -5809,8 +5938,7 @@ output_thread_groups (struct ui_out *uiout, VEC(int) *inf_num, int mi_only) { - struct cleanup *back_to = make_cleanup_ui_out_list_begin_end (uiout, - field_name); + struct cleanup *back_to; int is_mi = ui_out_is_mi_like_p (uiout); int inf; int i; @@ -5820,6 +5948,8 @@ output_thread_groups (struct ui_out *uiout, if (!is_mi && mi_only) return; + back_to = make_cleanup_ui_out_list_begin_end (uiout, field_name); + for (i = 0; VEC_iterate (int, inf_num, i, inf); ++i) { if (is_mi) @@ -7404,11 +7534,7 @@ disable_breakpoints_in_shlibs (void) || (is_tracepoint (b))) && loc->pspace == current_program_space && !loc->shlib_disabled -#ifdef PC_SOLIB - && PC_SOLIB (loc->address) -#else && solib_name_from_address (loc->pspace, loc->address) -#endif ) { loc->shlib_disabled = 1; @@ -7416,9 +7542,9 @@ disable_breakpoints_in_shlibs (void) } } -/* Disable any breakpoints and tracepoints that are in an unloaded shared - library. Only apply to enabled breakpoints, disabled ones can just stay - disabled. */ +/* Disable any breakpoints and tracepoints that are in SOLIB upon + notification of unloaded_shlib. Only apply to enabled breakpoints, + disabled ones can just stay disabled. */ static void disable_breakpoints_in_unloaded_shlib (struct so_list *solib) @@ -7470,6 +7596,66 @@ disable_breakpoints_in_unloaded_shlib (struct so_list *solib) } } +/* Disable any breakpoints and tracepoints in OBJFILE upon + notification of free_objfile. Only apply to enabled breakpoints, + disabled ones can just stay disabled. */ + +static void +disable_breakpoints_in_freed_objfile (struct objfile *objfile) +{ + struct breakpoint *b; + + if (objfile == NULL) + return; + + /* If the file is a shared library not loaded by the user then + solib_unloaded was notified and disable_breakpoints_in_unloaded_shlib + was called. In that case there is no need to take action again. */ + if ((objfile->flags & OBJF_SHARED) && !(objfile->flags & OBJF_USERLOADED)) + return; + + ALL_BREAKPOINTS (b) + { + struct bp_location *loc; + int bp_modified = 0; + + if (!is_breakpoint (b) && !is_tracepoint (b)) + continue; + + for (loc = b->loc; loc != NULL; loc = loc->next) + { + CORE_ADDR loc_addr = loc->address; + + if (loc->loc_type != bp_loc_hardware_breakpoint + && loc->loc_type != bp_loc_software_breakpoint) + continue; + + if (loc->shlib_disabled != 0) + continue; + + if (objfile->pspace != loc->pspace) + continue; + + if (loc->loc_type != bp_loc_hardware_breakpoint + && loc->loc_type != bp_loc_software_breakpoint) + continue; + + if (is_addr_in_objfile (loc_addr, objfile)) + { + loc->shlib_disabled = 1; + loc->inserted = 0; + + mark_breakpoint_location_modified (loc); + + bp_modified = 1; + } + } + + if (bp_modified) + observer_notify_breakpoint_modified (b); + } +} + /* FORK & VFORK catchpoints. */ /* An instance of this type is used to represent a fork or vfork @@ -7495,7 +7681,7 @@ struct fork_catchpoint static int insert_catch_fork (struct bp_location *bl) { - return target_insert_fork_catchpoint (PIDGET (inferior_ptid)); + return target_insert_fork_catchpoint (ptid_get_pid (inferior_ptid)); } /* Implement the "remove" breakpoint_ops method for fork @@ -7504,7 +7690,7 @@ insert_catch_fork (struct bp_location *bl) static int remove_catch_fork (struct bp_location *bl) { - return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); + return target_remove_fork_catchpoint (ptid_get_pid (inferior_ptid)); } /* Implement the "breakpoint_hit" breakpoint_ops method for fork @@ -7612,7 +7798,7 @@ static struct breakpoint_ops catch_fork_breakpoint_ops; static int insert_catch_vfork (struct bp_location *bl) { - return target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); + return target_insert_vfork_catchpoint (ptid_get_pid (inferior_ptid)); } /* Implement the "remove" breakpoint_ops method for vfork @@ -7621,7 +7807,7 @@ insert_catch_vfork (struct bp_location *bl) static int remove_catch_vfork (struct bp_location *bl) { - return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); + return target_remove_vfork_catchpoint (ptid_get_pid (inferior_ptid)); } /* Implement the "breakpoint_hit" breakpoint_ops method for vfork @@ -8058,7 +8244,7 @@ get_catch_syscall_inferior_data (struct inferior *inf) inf_data = inferior_data (inf, catch_syscall_inferior_data); if (inf_data == NULL) { - inf_data = XZALLOC (struct catch_syscall_inferior_data); + inf_data = XCNEW (struct catch_syscall_inferior_data); set_inferior_data (inf, catch_syscall_inferior_data, inf_data); } @@ -8114,7 +8300,7 @@ insert_catch_syscall (struct bp_location *bl) } } - return target_set_syscall_catchpoint (PIDGET (inferior_ptid), + return target_set_syscall_catchpoint (ptid_get_pid (inferior_ptid), inf_data->total_syscalls_count != 0, inf_data->any_syscall_count, VEC_length (int, @@ -8154,7 +8340,7 @@ remove_catch_syscall (struct bp_location *bl) } } - return target_set_syscall_catchpoint (PIDGET (inferior_ptid), + return target_set_syscall_catchpoint (ptid_get_pid (inferior_ptid), inf_data->total_syscalls_count != 0, inf_data->any_syscall_count, VEC_length (int, @@ -8193,10 +8379,9 @@ breakpoint_hit_catch_syscall (const struct bp_location *bl, VEC_iterate (int, c->syscalls_to_be_caught, i, iter); i++) if (syscall_number == iter) - break; - /* Not the same. */ - if (!iter) - return 0; + return 1; + + return 0; } return 1; @@ -8477,13 +8662,13 @@ dtor_catch_exec (struct breakpoint *b) static int insert_catch_exec (struct bp_location *bl) { - return target_insert_exec_catchpoint (PIDGET (inferior_ptid)); + return target_insert_exec_catchpoint (ptid_get_pid (inferior_ptid)); } static int remove_catch_exec (struct bp_location *bl) { - return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); + return target_remove_exec_catchpoint (ptid_get_pid (inferior_ptid)); } static int @@ -8947,25 +9132,16 @@ update_dprintf_command_list (struct breakpoint *b) _("Invalid dprintf style.")); gdb_assert (printf_line != NULL); - /* Manufacture a printf/continue sequence. */ + /* Manufacture a printf sequence. */ { - struct command_line *printf_cmd_line, *cont_cmd_line = NULL; - - if (strcmp (dprintf_style, dprintf_style_agent) != 0) - { - cont_cmd_line = xmalloc (sizeof (struct command_line)); - cont_cmd_line->control_type = simple_control; - cont_cmd_line->body_count = 0; - cont_cmd_line->body_list = NULL; - cont_cmd_line->next = NULL; - cont_cmd_line->line = xstrdup ("continue"); - } + struct command_line *printf_cmd_line + = xmalloc (sizeof (struct command_line)); printf_cmd_line = xmalloc (sizeof (struct command_line)); printf_cmd_line->control_type = simple_control; printf_cmd_line->body_count = 0; printf_cmd_line->body_list = NULL; - printf_cmd_line->next = cont_cmd_line; + printf_cmd_line->next = NULL; printf_cmd_line->line = printf_line; breakpoint_set_commands (b, printf_cmd_line); @@ -9103,7 +9279,8 @@ init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, if (b->cond_string) { - char *arg = b->cond_string; + const char *arg = b->cond_string; + loc->cond = parse_exp_1 (&arg, loc->address, block_for_pc (loc->address), 0); if (*arg) @@ -9374,7 +9551,7 @@ invalid_thread_id_error (int id) If no thread is found, *THREAD is set to -1. */ static void -find_condition_and_thread (char *tok, CORE_ADDR pc, +find_condition_and_thread (const char *tok, CORE_ADDR pc, char **cond_string, int *thread, int *task, char **rest) { @@ -9385,12 +9562,12 @@ find_condition_and_thread (char *tok, CORE_ADDR pc, while (tok && *tok) { - char *end_tok; + const char *end_tok; int toklen; - char *cond_start = NULL; - char *cond_end = NULL; + const char *cond_start = NULL; + const char *cond_end = NULL; - tok = skip_spaces (tok); + tok = skip_spaces_const (tok); if ((*tok == '"' || *tok == ',') && rest) { @@ -9398,7 +9575,7 @@ find_condition_and_thread (char *tok, CORE_ADDR pc, return; } - end_tok = skip_to_space (tok); + end_tok = skip_to_space_const (tok); toklen = end_tok - tok; @@ -9417,24 +9594,24 @@ find_condition_and_thread (char *tok, CORE_ADDR pc, char *tmptok; tok = end_tok + 1; - tmptok = tok; - *thread = strtol (tok, &tok, 0); + *thread = strtol (tok, &tmptok, 0); if (tok == tmptok) error (_("Junk after thread keyword.")); if (!valid_thread_id (*thread)) invalid_thread_id_error (*thread); + tok = tmptok; } else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) { char *tmptok; tok = end_tok + 1; - tmptok = tok; - *task = strtol (tok, &tok, 0); + *task = strtol (tok, &tmptok, 0); if (tok == tmptok) error (_("Junk after task keyword.")); if (!valid_task_id (*task)) error (_("Unknown task %d."), *task); + tok = tmptok; } else if (rest) { @@ -9495,20 +9672,20 @@ decode_static_tracepoint_spec (char **arg_p) /* Set a breakpoint. This function is shared between CLI and MI functions for setting a breakpoint. This function has two major - modes of operations, selected by the PARSE_CONDITION_AND_THREAD - parameter. If non-zero, the function will parse arg, extracting - breakpoint location, address and thread. Otherwise, ARG is just - the location of breakpoint, with condition and thread specified by - the COND_STRING and THREAD parameters. If INTERNAL is non-zero, - the breakpoint number will be allocated from the internal - breakpoint count. Returns true if any breakpoint was created; - false otherwise. */ + modes of operations, selected by the PARSE_ARG parameter. If + non-zero, the function will parse ARG, extracting location, + condition, thread and extra string. Otherwise, ARG is just the + breakpoint's location, with condition, thread, and extra string + specified by the COND_STRING, THREAD and EXTRA_STRING parameters. + If INTERNAL is non-zero, the breakpoint number will be allocated + from the internal breakpoint count. Returns true if any breakpoint + was created; false otherwise. */ int create_breakpoint (struct gdbarch *gdbarch, char *arg, char *cond_string, int thread, char *extra_string, - int parse_condition_and_thread, + int parse_arg, int tempflag, enum bptype type_wanted, int ignore_count, enum auto_boolean pending_break_support, @@ -9622,44 +9799,47 @@ create_breakpoint (struct gdbarch *gdbarch, breakpoint. */ if (!pending) { - struct linespec_sals *lsal; + if (parse_arg) + { + char *rest; + struct linespec_sals *lsal; - lsal = VEC_index (linespec_sals, canonical.sals, 0); + lsal = VEC_index (linespec_sals, canonical.sals, 0); - if (parse_condition_and_thread) - { - char *rest; - /* Here we only parse 'arg' to separate condition - from thread number, so parsing in context of first - sal is OK. When setting the breakpoint we'll - re-parse it in context of each sal. */ - - find_condition_and_thread (arg, lsal->sals.sals[0].pc, &cond_string, - &thread, &task, &rest); - if (cond_string) - make_cleanup (xfree, cond_string); - if (rest) - make_cleanup (xfree, rest); - if (rest) - extra_string = rest; + /* Here we only parse 'arg' to separate condition + from thread number, so parsing in context of first + sal is OK. When setting the breakpoint we'll + re-parse it in context of each sal. */ + + find_condition_and_thread (arg, lsal->sals.sals[0].pc, &cond_string, + &thread, &task, &rest); + if (cond_string) + make_cleanup (xfree, cond_string); + if (rest) + make_cleanup (xfree, rest); + if (rest) + extra_string = rest; } else { - /* Create a private copy of condition string. */ - if (cond_string) - { - cond_string = xstrdup (cond_string); - make_cleanup (xfree, cond_string); - } - /* Create a private copy of any extra string. */ - if (extra_string) - { - extra_string = xstrdup (extra_string); - make_cleanup (xfree, extra_string); - } + if (*arg != '\0') + error (_("Garbage '%s' at end of location"), arg); + + /* Create a private copy of condition string. */ + if (cond_string) + { + cond_string = xstrdup (cond_string); + make_cleanup (xfree, cond_string); + } + /* Create a private copy of any extra string. */ + if (extra_string) + { + extra_string = xstrdup (extra_string); + make_cleanup (xfree, extra_string); + } } - ops->create_breakpoints_sal (gdbarch, &canonical, lsal, + ops->create_breakpoints_sal (gdbarch, &canonical, cond_string, extra_string, type_wanted, tempflag ? disp_del : disp_donttouch, thread, task, ignore_count, ops, @@ -9684,7 +9864,7 @@ create_breakpoint (struct gdbarch *gdbarch, init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops); b->addr_string = copy_arg; - if (parse_condition_and_thread) + if (parse_arg) b->cond_string = NULL; else { @@ -9796,7 +9976,7 @@ resolve_sal_pc (struct symtab_and_line *sal) if (sym != NULL) { fixup_symbol_section (sym, sal->symtab->objfile); - sal->section = SYMBOL_OBJ_SECTION (sym); + sal->section = SYMBOL_OBJ_SECTION (sal->symtab->objfile, sym); } else { @@ -9805,14 +9985,14 @@ resolve_sal_pc (struct symtab_and_line *sal) if we have line numbers but no functions (as can happen in assembly source). */ - struct minimal_symbol *msym; + struct bound_minimal_symbol msym; struct cleanup *old_chain = save_current_space_and_thread (); switch_to_program_space_and_thread (sal->pspace); msym = lookup_minimal_symbol_by_pc (sal->pc); - if (msym) - sal->section = SYMBOL_OBJ_SECTION (msym); + if (msym.minsym) + sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); do_cleanups (old_chain); } @@ -10298,6 +10478,7 @@ watchpoint_exp_is_const (const struct expression *exp) case OP_TYPE: case OP_TYPEOF: case OP_DECLTYPE: + case OP_TYPEID: case OP_NAME: case OP_OBJC_NSSTRING: @@ -10483,7 +10664,6 @@ print_it_watchpoint (bpstat bs) { struct cleanup *old_chain; struct breakpoint *b; - const struct bp_location *bl; struct ui_file *stb; enum print_stop_action result; struct watchpoint *w; @@ -10491,7 +10671,6 @@ print_it_watchpoint (bpstat bs) gdb_assert (bs->bp_location_at != NULL); - bl = bs->bp_location_at; b = bs->breakpoint_at; w = (struct watchpoint *) b; @@ -10640,6 +10819,20 @@ print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) print_recreate_thread (b, fp); } +/* Implement the "explains_signal" breakpoint_ops method for + watchpoints. */ + +static int +explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) +{ + /* A software watchpoint cannot cause a signal other than + GDB_SIGNAL_TRAP. */ + if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) + return 0; + + return 1; +} + /* The breakpoint_ops structure to be used in hardware watchpoints. */ static struct breakpoint_ops watchpoint_breakpoint_ops; @@ -10836,7 +11029,7 @@ is_masked_watchpoint (const struct breakpoint *b) hw_read: watch read, hw_access: watch access (read or write) */ static void -watch_command_1 (char *arg, int accessflag, int from_tty, +watch_command_1 (const char *arg, int accessflag, int from_tty, int just_location, int internal) { volatile struct gdb_exception e; @@ -10845,12 +11038,12 @@ watch_command_1 (char *arg, int accessflag, int from_tty, const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; struct value *val, *mark, *result; struct frame_info *frame; - char *exp_start = NULL; - char *exp_end = NULL; - char *tok, *end_tok; + const char *exp_start = NULL; + const char *exp_end = NULL; + const char *tok, *end_tok; int toklen = -1; - char *cond_start = NULL; - char *cond_end = NULL; + const char *cond_start = NULL; + const char *cond_end = NULL; enum bptype bp_type; int thread = -1; int pc = 0; @@ -10859,15 +11052,19 @@ watch_command_1 (char *arg, int accessflag, int from_tty, int use_mask = 0; CORE_ADDR mask = 0; struct watchpoint *w; + char *expression; + struct cleanup *back_to; /* Make sure that we actually have parameters to parse. */ if (arg != NULL && arg[0] != '\0') { - char *value_start; + const char *value_start; + + exp_end = arg + strlen (arg); /* Look for "parameter value" pairs at the end of the arguments string. */ - for (tok = arg + strlen (arg) - 1; tok > arg; tok--) + for (tok = exp_end - 1; tok > arg; tok--) { /* Skip whitespace at the end of the argument list. */ while (tok > arg && (*tok == ' ' || *tok == '\t')) @@ -10937,13 +11134,19 @@ watch_command_1 (char *arg, int accessflag, int from_tty, /* Truncate the string and get rid of the "parameter value" pair before the arguments string is parsed by the parse_exp_1 function. */ - *tok = '\0'; + exp_end = tok; } } + else + exp_end = arg; - /* Parse the rest of the arguments. */ + /* Parse the rest of the arguments. From here on out, everything + is in terms of a newly allocated string instead of the original + ARG. */ innermost_block = NULL; - exp_start = arg; + expression = savestring (arg, exp_end - arg); + back_to = make_cleanup (xfree, expression); + exp_start = arg = expression; exp = parse_exp_1 (&arg, 0, 0, 0); exp_end = arg; /* Remove trailing whitespace from the expression before saving it. @@ -10965,7 +11168,7 @@ watch_command_1 (char *arg, int accessflag, int from_tty, exp_valid_block = innermost_block; mark = value_mark (); - fetch_subexp_value (exp, &pc, &val, &result, NULL); + fetch_subexp_value (exp, &pc, &val, &result, NULL, just_location); if (just_location) { @@ -10989,8 +11192,8 @@ watch_command_1 (char *arg, int accessflag, int from_tty, else if (val != NULL) release_value (val); - tok = skip_spaces (arg); - end_tok = skip_to_space (tok); + tok = skip_spaces_const (arg); + end_tok = skip_to_space_const (tok); toklen = end_tok - tok; if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) @@ -11011,13 +11214,6 @@ watch_command_1 (char *arg, int accessflag, int from_tty, if (*tok) error (_("Junk at end of command.")); - if (accessflag == hw_read) - bp_type = bp_read_watchpoint; - else if (accessflag == hw_access) - bp_type = bp_access_watchpoint; - else - bp_type = bp_hardware_watchpoint; - frame = block_innermost_frame (exp_valid_block); /* If the expression is "local", then set up a "watchpoint scope" @@ -11054,7 +11250,17 @@ watch_command_1 (char *arg, int accessflag, int from_tty, } } - /* Now set up the breakpoint. */ + /* Now set up the breakpoint. We create all watchpoints as hardware + watchpoints here even if hardware watchpoints are turned off, a call + to update_watchpoint later in this function will cause the type to + drop back to bp_watchpoint (software watchpoint) if required. */ + + if (accessflag == hw_read) + bp_type = bp_read_watchpoint; + else if (accessflag == hw_access) + bp_type = bp_access_watchpoint; + else + bp_type = bp_hardware_watchpoint; w = XCNEW (struct watchpoint); b = &w->base; @@ -11142,6 +11348,7 @@ watch_command_1 (char *arg, int accessflag, int from_tty, } install_breakpoint (internal, b, 1); + do_cleanups (back_to); } /* Return count of debug registers needed to watch the given expression. @@ -11430,7 +11637,7 @@ until_break_command (char *arg, int from_tty, int anywhere) it updates arg to point to the first character following the parsed if clause in the arg string. */ -static char * +char * ep_parse_optional_if_clause (char **arg) { char *cond_string; @@ -11543,180 +11750,6 @@ catch_exec_command_1 (char *arg, int from_tty, install_breakpoint (0, &c->base, 1); } -static enum print_stop_action -print_it_exception_catchpoint (bpstat bs) -{ - struct ui_out *uiout = current_uiout; - struct breakpoint *b = bs->breakpoint_at; - int bp_temp, bp_throw; - - annotate_catchpoint (b->number); - - bp_throw = strstr (b->addr_string, "throw") != NULL; - if (b->loc->address != b->loc->requested_address) - breakpoint_adjustment_warning (b->loc->requested_address, - b->loc->address, - b->number, 1); - bp_temp = b->disposition == disp_del; - ui_out_text (uiout, - bp_temp ? "Temporary catchpoint " - : "Catchpoint "); - if (!ui_out_is_mi_like_p (uiout)) - ui_out_field_int (uiout, "bkptno", b->number); - ui_out_text (uiout, - bp_throw ? " (exception thrown), " - : " (exception caught), "); - if (ui_out_is_mi_like_p (uiout)) - { - ui_out_field_string (uiout, "reason", - async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); - ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); - ui_out_field_int (uiout, "bkptno", b->number); - } - return PRINT_SRC_AND_LOC; -} - -static void -print_one_exception_catchpoint (struct breakpoint *b, - struct bp_location **last_loc) -{ - struct value_print_options opts; - struct ui_out *uiout = current_uiout; - - get_user_print_options (&opts); - if (opts.addressprint) - { - annotate_field (4); - if (b->loc == NULL || b->loc->shlib_disabled) - ui_out_field_string (uiout, "addr", ""); - else - ui_out_field_core_addr (uiout, "addr", - b->loc->gdbarch, b->loc->address); - } - annotate_field (5); - if (b->loc) - *last_loc = b->loc; - if (strstr (b->addr_string, "throw") != NULL) - { - ui_out_field_string (uiout, "what", "exception throw"); - if (ui_out_is_mi_like_p (uiout)) - ui_out_field_string (uiout, "catch-type", "throw"); - } - else - { - ui_out_field_string (uiout, "what", "exception catch"); - if (ui_out_is_mi_like_p (uiout)) - ui_out_field_string (uiout, "catch-type", "catch"); - } -} - -static void -print_mention_exception_catchpoint (struct breakpoint *b) -{ - struct ui_out *uiout = current_uiout; - int bp_temp; - int bp_throw; - - bp_temp = b->disposition == disp_del; - bp_throw = strstr (b->addr_string, "throw") != NULL; - ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") - : _("Catchpoint ")); - ui_out_field_int (uiout, "bkptno", b->number); - ui_out_text (uiout, bp_throw ? _(" (throw)") - : _(" (catch)")); -} - -/* Implement the "print_recreate" breakpoint_ops method for throw and - catch catchpoints. */ - -static void -print_recreate_exception_catchpoint (struct breakpoint *b, - struct ui_file *fp) -{ - int bp_temp; - int bp_throw; - - bp_temp = b->disposition == disp_del; - bp_throw = strstr (b->addr_string, "throw") != NULL; - fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); - fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); - print_recreate_thread (b, fp); -} - -static struct breakpoint_ops gnu_v3_exception_catchpoint_ops; - -static int -handle_gnu_v3_exceptions (int tempflag, char *cond_string, - enum exception_event_kind ex_event, int from_tty) -{ - char *trigger_func_name; - - if (ex_event == EX_EVENT_CATCH) - trigger_func_name = "__cxa_begin_catch"; - else - trigger_func_name = "__cxa_throw"; - - create_breakpoint (get_current_arch (), - trigger_func_name, cond_string, -1, NULL, - 0 /* condition and thread are valid. */, - tempflag, bp_breakpoint, - 0, - AUTO_BOOLEAN_TRUE /* pending */, - &gnu_v3_exception_catchpoint_ops, from_tty, - 1 /* enabled */, - 0 /* internal */, - 0); - - return 1; -} - -/* Deal with "catch catch" and "catch throw" commands. */ - -static void -catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, - int tempflag, int from_tty) -{ - char *cond_string = NULL; - - if (!arg) - arg = ""; - arg = skip_spaces (arg); - - cond_string = ep_parse_optional_if_clause (&arg); - - if ((*arg != '\0') && !isspace (*arg)) - error (_("Junk at end of arguments.")); - - if (ex_event != EX_EVENT_THROW - && ex_event != EX_EVENT_CATCH) - error (_("Unsupported or unknown exception event; cannot catch it")); - - if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) - return; - - warning (_("Unsupported with this platform/compiler combination.")); -} - -/* Implementation of "catch catch" command. */ - -static void -catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) -{ - int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; - - catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); -} - -/* Implementation of "catch throw" command. */ - -static void -catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) -{ - int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; - - catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); -} - void init_ada_exception_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, @@ -11724,6 +11757,7 @@ init_ada_exception_breakpoint (struct breakpoint *b, char *addr_string, const struct breakpoint_ops *ops, int tempflag, + int enabled, int from_tty) { if (from_tty) @@ -11746,7 +11780,7 @@ init_ada_exception_breakpoint (struct breakpoint *b, init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); - b->enable_state = bp_enabled; + b->enable_state = enabled ? bp_enabled : bp_disabled; b->disposition = tempflag ? disp_del : disp_donttouch; b->addr_string = addr_string; b->language = language_ada; @@ -11768,8 +11802,7 @@ catch_syscall_split_args (char *arg) struct syscall s; /* Skip whitespace. */ - while (isspace (*arg)) - arg++; + arg = skip_spaces (arg); for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) cur_name[i] = arg[i]; @@ -12707,7 +12740,6 @@ bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) static void say_where (struct breakpoint *b) { - struct ui_out *uiout = current_uiout; struct value_print_options opts; get_user_print_options (&opts); @@ -12761,6 +12793,9 @@ bp_location_dtor (struct bp_location *self) if (self->cond_bytecode) free_agent_expr (self->cond_bytecode); xfree (self->function_name); + + VEC_free (agent_expr_p, self->target_info.conditions); + VEC_free (agent_expr_p, self->target_info.tcommands); } static const struct bp_location_ops bp_location_ops = @@ -12776,6 +12811,7 @@ base_breakpoint_dtor (struct breakpoint *self) { decref_counted_command_line (&self->commands); xfree (self->cond_string); + xfree (self->extra_string); xfree (self->addr_string); xfree (self->filter); xfree (self->addr_string_range_end); @@ -12883,7 +12919,6 @@ base_breakpoint_create_sals_from_address (char **arg, static void base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, struct linespec_result *c, - struct linespec_sals *lsal, char *cond_string, char *extra_string, enum bptype type_wanted, @@ -12906,10 +12941,18 @@ base_breakpoint_decode_linespec (struct breakpoint *b, char **s, /* The default 'explains_signal' method. */ -static enum bpstat_signal_value -base_breakpoint_explains_signal (struct breakpoint *b) +static int +base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) +{ + return 1; +} + +/* The default "after_condition_true" method. */ + +static void +base_breakpoint_after_condition_true (struct bpstats *bs) { - return BPSTAT_SIGNAL_HIDE; + /* Nothing to do. */ } struct breakpoint_ops base_breakpoint_ops = @@ -12931,7 +12974,8 @@ struct breakpoint_ops base_breakpoint_ops = base_breakpoint_create_sals_from_address, base_breakpoint_create_breakpoints_sal, base_breakpoint_decode_linespec, - base_breakpoint_explains_signal + base_breakpoint_explains_signal, + base_breakpoint_after_condition_true, }; /* Default breakpoint_ops methods. */ @@ -12975,8 +13019,6 @@ bkpt_breakpoint_hit (const struct bp_location *bl, struct address_space *aspace, CORE_ADDR bp_addr, const struct target_waitstatus *ws) { - struct breakpoint *b = bl->owner; - if (ws->kind != TARGET_WAITKIND_STOPPED || ws->value.sig != GDB_SIGNAL_TRAP) return 0; @@ -13098,7 +13140,6 @@ bkpt_create_sals_from_address (char **arg, static void bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, struct linespec_result *canonical, - struct linespec_sals *lsal, char *cond_string, char *extra_string, enum bptype type_wanted, @@ -13109,7 +13150,7 @@ bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, int from_tty, int enabled, int internal, unsigned flags) { - create_breakpoints_sal_default (gdbarch, canonical, lsal, + create_breakpoints_sal_default (gdbarch, canonical, cond_string, extra_string, type_wanted, disposition, thread, task, @@ -13170,7 +13211,6 @@ internal_bkpt_check_status (bpstat bs) static enum print_stop_action internal_bkpt_print_it (bpstat bs) { - struct ui_out *uiout = current_uiout; struct breakpoint *b; b = bs->breakpoint_at; @@ -13228,7 +13268,7 @@ static void momentary_bkpt_re_set (struct breakpoint *b) { /* Keep temporary breakpoints, which can be encountered when we step - over a dlopen call and SOLIB_ADD is resetting the breakpoints. + over a dlopen call and solib_add is resetting the breakpoints. Otherwise these should have been blown away via the cleanup chain or by breakpoint_init_inferior when we rerun the executable. */ } @@ -13437,7 +13477,6 @@ tracepoint_create_sals_from_address (char **arg, static void tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, struct linespec_result *canonical, - struct linespec_sals *lsal, char *cond_string, char *extra_string, enum bptype type_wanted, @@ -13448,7 +13487,7 @@ tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, int from_tty, int enabled, int internal, unsigned flags) { - create_breakpoints_sal_default (gdbarch, canonical, lsal, + create_breakpoints_sal_default (gdbarch, canonical, cond_string, extra_string, type_wanted, disposition, thread, task, @@ -13489,6 +13528,83 @@ tracepoint_probe_decode_linespec (struct breakpoint *b, char **s, static struct breakpoint_ops tracepoint_probe_breakpoint_ops; +/* Dprintf breakpoint_ops methods. */ + +static void +dprintf_re_set (struct breakpoint *b) +{ + breakpoint_re_set_default (b); + + /* This breakpoint could have been pending, and be resolved now, and + if so, we should now have the extra string. If we don't, the + dprintf was malformed when created, but we couldn't tell because + we can't extract the extra string until the location is + resolved. */ + if (b->loc != NULL && b->extra_string == NULL) + error (_("Format string required")); + + /* 1 - connect to target 1, that can run breakpoint commands. + 2 - create a dprintf, which resolves fine. + 3 - disconnect from target 1 + 4 - connect to target 2, that can NOT run breakpoint commands. + + After steps #3/#4, you'll want the dprintf command list to + be updated, because target 1 and 2 may well return different + answers for target_can_run_breakpoint_commands(). + Given absence of finer grained resetting, we get to do + it all the time. */ + if (b->extra_string != NULL) + update_dprintf_command_list (b); +} + +/* Implement the "print_recreate" breakpoint_ops method for dprintf. */ + +static void +dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) +{ + fprintf_unfiltered (fp, "dprintf %s%s", tp->addr_string, + tp->extra_string); + print_recreate_thread (tp, fp); +} + +/* Implement the "after_condition_true" breakpoint_ops method for + dprintf. + + dprintf's are implemented with regular commands in their command + list, but we run the commands here instead of before presenting the + stop to the user, as dprintf's don't actually cause a stop. This + also makes it so that the commands of multiple dprintfs at the same + address are all handled. */ + +static void +dprintf_after_condition_true (struct bpstats *bs) +{ + struct cleanup *old_chain; + struct bpstats tmp_bs = { NULL }; + struct bpstats *tmp_bs_p = &tmp_bs; + + /* dprintf's never cause a stop. This wasn't set in the + check_status hook instead because that would make the dprintf's + condition not be evaluated. */ + bs->stop = 0; + + /* Run the command list here. Take ownership of it instead of + copying. We never want these commands to run later in + bpstat_do_actions, if a breakpoint that causes a stop happens to + be set at same address as this dprintf, or even if running the + commands here throws. */ + tmp_bs.commands = bs->commands; + bs->commands = NULL; + old_chain = make_cleanup_decref_counted_command_line (&tmp_bs.commands); + + bpstat_do_actions_1 (&tmp_bs_p); + + /* 'tmp_bs.commands' will usually be NULL by now, but + bpstat_do_actions_1 may return early without processing the whole + list. */ + do_cleanups (old_chain); +} + /* The breakpoint_ops structure to be used on static tracepoints with markers (`-m'). */ @@ -13512,7 +13628,6 @@ strace_marker_create_sals_from_address (char **arg, static void strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, struct linespec_result *canonical, - struct linespec_sals *lsal, char *cond_string, char *extra_string, enum bptype type_wanted, @@ -13524,6 +13639,8 @@ strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, int internal, unsigned flags) { int i; + struct linespec_sals *lsal = VEC_index (linespec_sals, + canonical->sals, 0); /* If the user is creating a static tracepoint by marker id (strace -m MARKER_ID), then store the sals index, so that @@ -14037,7 +14154,7 @@ update_breakpoint_locations (struct breakpoint *b, old symtab. */ if (b->cond_string != NULL) { - char *s; + const char *s; volatile struct gdb_exception e; s = b->cond_string; @@ -14245,7 +14362,6 @@ create_sals_from_address_default (char **arg, static void create_breakpoints_sal_default (struct gdbarch *gdbarch, struct linespec_result *canonical, - struct linespec_sals *lsal, char *cond_string, char *extra_string, enum bptype type_wanted, @@ -14602,25 +14718,35 @@ disable_command (char *args, int from_tty) if (user_breakpoint_p (bpt)) disable_breakpoint (bpt); } - else if (strchr (args, '.')) + else { - struct bp_location *loc = find_location_by_number (args); - if (loc) + char *num = extract_arg (&args); + + while (num) { - if (loc->enabled) + if (strchr (num, '.')) { - loc->enabled = 0; - mark_breakpoint_location_modified (loc); + struct bp_location *loc = find_location_by_number (num); + + if (loc) + { + if (loc->enabled) + { + loc->enabled = 0; + mark_breakpoint_location_modified (loc); + } + if (target_supports_enable_disable_tracepoint () + && current_trace_status ()->running && loc->owner + && is_tracepoint (loc->owner)) + target_disable_tracepoint (loc); + } + update_global_location_list (0); } - if (target_supports_enable_disable_tracepoint () - && current_trace_status ()->running && loc->owner - && is_tracepoint (loc->owner)) - target_disable_tracepoint (loc); + else + map_breakpoint_numbers (num, do_map_disable_breakpoint, NULL); + num = extract_arg (&args); } - update_global_location_list (0); } - else - map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); } static void @@ -14726,25 +14852,35 @@ enable_command (char *args, int from_tty) if (user_breakpoint_p (bpt)) enable_breakpoint (bpt); } - else if (strchr (args, '.')) + else { - struct bp_location *loc = find_location_by_number (args); - if (loc) + char *num = extract_arg (&args); + + while (num) { - if (!loc->enabled) + if (strchr (num, '.')) { - loc->enabled = 1; - mark_breakpoint_location_modified (loc); + struct bp_location *loc = find_location_by_number (num); + + if (loc) + { + if (!loc->enabled) + { + loc->enabled = 1; + mark_breakpoint_location_modified (loc); + } + if (target_supports_enable_disable_tracepoint () + && current_trace_status ()->running && loc->owner + && is_tracepoint (loc->owner)) + target_enable_tracepoint (loc); + } + update_global_location_list (1); } - if (target_supports_enable_disable_tracepoint () - && current_trace_status ()->running && loc->owner - && is_tracepoint (loc->owner)) - target_enable_tracepoint (loc); + else + map_breakpoint_numbers (num, do_map_enable_breakpoint, NULL); + num = extract_arg (&args); } - update_global_location_list (1); } - else - map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); } /* This struct packages up disposition data for application to multiple @@ -14864,7 +15000,7 @@ deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, { struct bp_target_info *bp_tgt; - bp_tgt = XZALLOC (struct bp_target_info); + bp_tgt = XCNEW (struct bp_target_info); bp_tgt->placed_address_space = aspace; bp_tgt->placed_address = pc; @@ -15073,7 +15209,7 @@ catching_syscall_number (int syscall_number) /* Complete syscall names. Used by "catch syscall". */ static VEC (char_ptr) * catch_syscall_completer (struct cmd_list_element *cmd, - char *text, char *word) + const char *text, const char *word) { const char **list = get_syscall_names (); VEC (char_ptr) *retlist @@ -15370,9 +15506,7 @@ trace_pass_command (char *args, int from_tty) count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ - while (*args && isspace ((int) *args)) - args++; - + args = skip_spaces (args); if (*args && strncasecmp (args, "all", 3) == 0) { struct breakpoint *b; @@ -15511,7 +15645,6 @@ save_breakpoints (char *filename, int from_tty, { struct breakpoint *tp; int any = 0; - char *pathname; struct cleanup *cleanup; struct ui_file *fp; int extra_trace_bits = 0; @@ -15547,9 +15680,9 @@ save_breakpoints (char *filename, int from_tty, return; } - pathname = tilde_expand (filename); - cleanup = make_cleanup (xfree, pathname); - fp = gdb_fopen (pathname, "w"); + filename = tilde_expand (filename); + cleanup = make_cleanup (xfree, filename); + fp = gdb_fopen (filename, "w"); if (!fp) error (_("Unable to open file '%s' for saving (%s)"), filename, safe_strerror (errno)); @@ -15580,7 +15713,7 @@ save_breakpoints (char *filename, int from_tty, if (tp->ignore_count) fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); - if (tp->commands) + if (tp->type != bp_dprintf && tp->commands) { volatile struct gdb_exception ex; @@ -15619,9 +15752,9 @@ save_breakpoints (char *filename, int from_tty, if (extra_trace_bits && *default_collect) fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); - do_cleanups (cleanup); if (from_tty) printf_filtered (_("Saved to file '%s'.\n"), filename); + do_cleanups (cleanup); } /* The `save breakpoints' command. */ @@ -15869,14 +16002,6 @@ initialize_breakpoint_ops (void) ops->create_sals_from_address = bkpt_probe_create_sals_from_address; ops->decode_linespec = bkpt_probe_decode_linespec; - /* GNU v3 exception catchpoints. */ - ops = &gnu_v3_exception_catchpoint_ops; - *ops = bkpt_breakpoint_ops; - ops->print_it = print_it_exception_catchpoint; - ops->print_one = print_one_exception_catchpoint; - ops->print_mention = print_mention_exception_catchpoint; - ops->print_recreate = print_recreate_exception_catchpoint; - /* Watchpoints. */ ops = &watchpoint_breakpoint_ops; *ops = base_breakpoint_ops; @@ -15891,6 +16016,7 @@ initialize_breakpoint_ops (void) ops->print_it = print_it_watchpoint; ops->print_mention = print_mention_watchpoint; ops->print_recreate = print_recreate_watchpoint; + ops->explains_signal = explains_signal_watchpoint; /* Masked watchpoints. */ ops = &masked_watchpoint_breakpoint_ops; @@ -15990,11 +16116,12 @@ initialize_breakpoint_ops (void) ops = &dprintf_breakpoint_ops; *ops = bkpt_base_breakpoint_ops; - ops->re_set = bkpt_re_set; + ops->re_set = dprintf_re_set; ops->resources_needed = bkpt_resources_needed; ops->print_it = bkpt_print_it; ops->print_mention = bkpt_print_mention; - ops->print_recreate = bkpt_print_recreate; + ops->print_recreate = dprintf_print_recreate; + ops->after_condition_true = dprintf_after_condition_true; } /* Chain containing all defined "enable breakpoint" subcommands. */ @@ -16009,6 +16136,7 @@ _initialize_breakpoint (void) initialize_breakpoint_ops (); observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); + observer_attach_free_objfile (disable_breakpoints_in_freed_objfile); observer_attach_inferior_exit (clear_syscall_counts); observer_attach_memory_changed (invalidate_bp_value_on_memory_change); @@ -16292,19 +16420,6 @@ Set temporary catchpoints to catch events."), &tcatch_cmdlist, "tcatch ", 0/*allow-unknown*/, &cmdlist); - /* Add catch and tcatch sub-commands. */ - add_catch_command ("catch", _("\ -Catch an exception, when caught."), - catch_catch_command, - NULL, - CATCH_PERMANENT, - CATCH_TEMPORARY); - add_catch_command ("throw", _("\ -Catch an exception, when thrown."), - catch_throw_command, - NULL, - CATCH_PERMANENT, - CATCH_TEMPORARY); add_catch_command ("fork", _("Catch calls to fork."), catch_fork_command_1, NULL, @@ -16589,8 +16704,7 @@ Set a dynamic printf at specified line or function.\n\ dprintf location,format string,arg1,arg2,...\n\ location may be a line number, function name, or \"*\" and an address.\n\ If a line number is specified, break at start of code for that line.\n\ -If a function is specified, break at start of code for that function.\n\ -")); +If a function is specified, break at start of code for that function.")); set_cmd_completer (c, location_completer); add_setshow_enum_cmd ("dprintf-style", class_support, @@ -16639,4 +16753,5 @@ agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ automatic_hardware_breakpoints = 1; observer_attach_about_to_proceed (breakpoint_about_to_proceed); + observer_attach_thread_exit (remove_threaded_breakpoints); }